Active Vibration Control of Rotor: Test Environment with Non-Contact Magnetic Actuator

Kari Tammi

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    The goal of this work was to set up a test environment for active vibration control of rotors, to study the dynamics of the system, and to design a control system to control the rotor vibrations. The principal idea was to control vibrations with a non-contacting magnetic actuator without a load-carrying function. The rotor was supported by conventional bearings at its ends. The test environment consisted of a rotor test rig, a magnetic actuator, and a programmable control unit. The test environment was tailored to have a large response when running the rotor close to its bending critical speed. First, damping the system by using a simple velocity-feedback controller was studied. The parameters of the controller were defined experimentally from the measured data. According to the simulations and the experiments performed, the velocity-feedback control system reduced vibration levels significantly. The controller made it possible to run the rotor over the critical speed. Second, a feedforward system, based on an adaptive finite-impulse-response filter, was designed to compensate disturbances due to mass imbalance. The coefficients of the filter were adapted by a least-mean-squares algorithm. The response due to mass imbalance in the rotor was significantly decreased. The simulations and experiments showed that the adaptive filter could be used as a supplementary system to the feedback system.
    Original languageEnglish
    Title of host publicationSmart materials and structures
    Subtitle of host publicationVTT Research Programme 2000-2002
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages67-80
    ISBN (Electronic)951-38-6279-8
    ISBN (Print)951-38-6278-X
    Publication statusPublished - 2003
    MoE publication typeA4 Article in a conference publication
    EventSmart materials and structures: VTT Research Program 2000–2002 - Espoo, Finland
    Duration: 4 Dec 20024 Dec 2002

    Publication series

    SeriesVTT Symposium
    Number225
    ISSN0357-9387

    Seminar

    SeminarSmart materials and structures
    CountryFinland
    CityEspoo
    Period4/12/024/12/02

    Fingerprint

    Magnetic actuators
    Vibration control
    Rotors
    Adaptive filters
    Controllers
    Bearings (structural)
    Feedback
    Control systems
    Velocity control
    FIR filters
    Vibrations (mechanical)
    Feedback control
    Damping
    Experiments

    Cite this

    Tammi, K. (2003). Active Vibration Control of Rotor: Test Environment with Non-Contact Magnetic Actuator. In Smart materials and structures: VTT Research Programme 2000-2002 (pp. 67-80). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 225
    Tammi, Kari. / Active Vibration Control of Rotor : Test Environment with Non-Contact Magnetic Actuator. Smart materials and structures: VTT Research Programme 2000-2002. Espoo : VTT Technical Research Centre of Finland, 2003. pp. 67-80 (VTT Symposium; No. 225).
    @inproceedings{c783f3df53074ec5ba3c56b758b17333,
    title = "Active Vibration Control of Rotor: Test Environment with Non-Contact Magnetic Actuator",
    abstract = "The goal of this work was to set up a test environment for active vibration control of rotors, to study the dynamics of the system, and to design a control system to control the rotor vibrations. The principal idea was to control vibrations with a non-contacting magnetic actuator without a load-carrying function. The rotor was supported by conventional bearings at its ends. The test environment consisted of a rotor test rig, a magnetic actuator, and a programmable control unit. The test environment was tailored to have a large response when running the rotor close to its bending critical speed. First, damping the system by using a simple velocity-feedback controller was studied. The parameters of the controller were defined experimentally from the measured data. According to the simulations and the experiments performed, the velocity-feedback control system reduced vibration levels significantly. The controller made it possible to run the rotor over the critical speed. Second, a feedforward system, based on an adaptive finite-impulse-response filter, was designed to compensate disturbances due to mass imbalance. The coefficients of the filter were adapted by a least-mean-squares algorithm. The response due to mass imbalance in the rotor was significantly decreased. The simulations and experiments showed that the adaptive filter could be used as a supplementary system to the feedback system.",
    author = "Kari Tammi",
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    series = "VTT Symposium",
    publisher = "VTT Technical Research Centre of Finland",
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    Tammi, K 2003, Active Vibration Control of Rotor: Test Environment with Non-Contact Magnetic Actuator. in Smart materials and structures: VTT Research Programme 2000-2002. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 225, pp. 67-80, Smart materials and structures, Espoo, Finland, 4/12/02.

    Active Vibration Control of Rotor : Test Environment with Non-Contact Magnetic Actuator. / Tammi, Kari.

    Smart materials and structures: VTT Research Programme 2000-2002. Espoo : VTT Technical Research Centre of Finland, 2003. p. 67-80 (VTT Symposium; No. 225).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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    N2 - The goal of this work was to set up a test environment for active vibration control of rotors, to study the dynamics of the system, and to design a control system to control the rotor vibrations. The principal idea was to control vibrations with a non-contacting magnetic actuator without a load-carrying function. The rotor was supported by conventional bearings at its ends. The test environment consisted of a rotor test rig, a magnetic actuator, and a programmable control unit. The test environment was tailored to have a large response when running the rotor close to its bending critical speed. First, damping the system by using a simple velocity-feedback controller was studied. The parameters of the controller were defined experimentally from the measured data. According to the simulations and the experiments performed, the velocity-feedback control system reduced vibration levels significantly. The controller made it possible to run the rotor over the critical speed. Second, a feedforward system, based on an adaptive finite-impulse-response filter, was designed to compensate disturbances due to mass imbalance. The coefficients of the filter were adapted by a least-mean-squares algorithm. The response due to mass imbalance in the rotor was significantly decreased. The simulations and experiments showed that the adaptive filter could be used as a supplementary system to the feedback system.

    AB - The goal of this work was to set up a test environment for active vibration control of rotors, to study the dynamics of the system, and to design a control system to control the rotor vibrations. The principal idea was to control vibrations with a non-contacting magnetic actuator without a load-carrying function. The rotor was supported by conventional bearings at its ends. The test environment consisted of a rotor test rig, a magnetic actuator, and a programmable control unit. The test environment was tailored to have a large response when running the rotor close to its bending critical speed. First, damping the system by using a simple velocity-feedback controller was studied. The parameters of the controller were defined experimentally from the measured data. According to the simulations and the experiments performed, the velocity-feedback control system reduced vibration levels significantly. The controller made it possible to run the rotor over the critical speed. Second, a feedforward system, based on an adaptive finite-impulse-response filter, was designed to compensate disturbances due to mass imbalance. The coefficients of the filter were adapted by a least-mean-squares algorithm. The response due to mass imbalance in the rotor was significantly decreased. The simulations and experiments showed that the adaptive filter could be used as a supplementary system to the feedback system.

    M3 - Conference article in proceedings

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    Tammi K. Active Vibration Control of Rotor: Test Environment with Non-Contact Magnetic Actuator. In Smart materials and structures: VTT Research Programme 2000-2002. Espoo: VTT Technical Research Centre of Finland. 2003. p. 67-80. (VTT Symposium; No. 225).